Prosecutors seeking conviction at any cost? This is as big of a crime, in my opinion, as the most serious underlying crimes they are charged with prosecuting. A prosecutor’s function is to seek justice, not to win. So watching a prosecutor who seems bent on winning at all costs should not only send chills down our backs, it should also raise our level of alertness to the very real fact that actual innocence is, to some prosecutors, not a viable obstacle to conviction (i.e., winning). Our justice system is good if it works, which requires prosecutors to abide by their function… justice, not victory.

Quoted from http://www.cnn.com/2008/US/01/03/dna.exoneration.ap/index.html?iref=mpstoryview:

DNA clears man in prison for 26 years – CNN.com

District Attorney Craig Watkins also attributes the exonerations to a past culture of overly aggressive prosecutors seeking convictions at any cost.

Chatman’s nearly 27 years in prison for aggravated sexual assault make him the longest-serving inmate in Texas to be freed by DNA evidence, Innocence Project lawyers said.